MX5 NC Oil Filter Warning
On NC’s we do see a few oil filter sealing O rings stay on the filler housing when you remove the old oil filter. I've only ever seen it with genuine MAZDA oil filters. MX5 NC Oil Filter O Ring The new oil filter will screw on (by only a thread or two) however it wont seal at high pressure possibly causing a leak which could result in major engine damage.
Just make sure the old seal is removed before you fit the new filter!!